<template>
    <div>
      <div style="margin: 10px 0">
        <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
  <!--      <el-input style="width: 200px" placeholder="请输入邮箱" suffix-icon="el-icon-message" class="ml-5" v-model="email"></el-input>-->
  <!--      <el-input style="width: 200px" placeholder="请输入地址" suffix-icon="el-icon-position" class="ml-5" v-model="address"></el-input>-->
        <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
        <el-button type="warning" @click="reset">重置</el-button>
      </div>
  
      <div style="margin: 10px 0">
        <el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>
        <el-popconfirm
            class="ml-5"
            confirm-button-text='确定'
            cancel-button-text='我再想想'
            icon="el-icon-info"
            icon-color="red"
            title="您确定批量删除这些数据吗？"
            @confirm="delBatch"
        >
          <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
        </el-popconfirm>
  <!--      <el-upload action="http://localhost:9090/user/import" :show-file-list="false" accept="xlsx" :on-success="handleExcelImportSuccess" style="display: inline-block">-->
  <!--        <el-button type="primary" class="ml-5">导入 <i class="el-icon-bottom"></i></el-button>-->
  <!--      </el-upload>-->
  <!--      <el-button type="primary" @click="exp" class="ml-5">导出 <i class="el-icon-top"></i></el-button>-->
      </div>
  
      <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"  @selection-change="handleSelectionChange">
        <el-table-column type="selection" width="55"></el-table-column>
        <el-table-column prop="id" label="ID" width="80"></el-table-column>
        <el-table-column prop="name" label="名称"></el-table-column>
        <el-table-column prop="flag" label="唯一标识"></el-table-column>
        <el-table-column prop="description" label="描述"></el-table-column>
        <el-table-column label="操作"  width="280" align="center">
          <template slot-scope="scope">
            <el-button type="info" @click="selectMenu(scope.row)">分配菜单 <i class="el-icon-menu"></i></el-button>
            <el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
            <!-- <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定删除吗？"
                @confirm="del(scope.row.id)"
            >
              <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm> -->
          </template>
        </el-table-column>
      </el-table>
      <div style="padding: 10px 0">
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="pageNum"
            :page-sizes="[2, 5, 10, 20]"
            :page-size="pageSize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
      </div>
  
      <el-dialog title="角色信息" :visible.sync="dialogFormVisible" width="30%" >
        <el-form label-width="80px" size="small">
          <el-form-item label="名称">
            <el-input v-model="form.name" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="唯一标识">
            <el-input v-model="form.flag" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="描述">
            <el-input v-model="form.description" autocomplete="off"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取 消</el-button>
          <el-button type="primary" @click="save">确 定</el-button>
        </div>
      </el-dialog>
  
      <el-dialog title="菜单分配" :visible.sync="menuDialogVis" width="30%">
        <el-tree
            :props="props"
            :data="menuData"
            show-checkbox
            node-key="id"
            ref="tree"
            :default-expanded-keys="expends"
            :default-checked-keys="checks">
           <!-- <span class="custom-tree-node" slot-scope="{ node, data }">
              <span><i :class="data.icon"></i> {{ data.name }}</span>
           </span> -->
        </el-tree>
        <div slot="footer" class="dialog-footer">
          <el-button @click="menuDialogVis = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleMenu">确 定</el-button>
        </div>
      </el-dialog>
    </div>
  </template>
  
  <script>
   import request from '@/utils/request';
  export default {
    name: "RoleView",
    data() {
      return {
        tableData: [],
        total: 0,
        pageNum: 1,
        pageSize: 10,
        name: "",
        form: {},
        dialogFormVisible: false,
        menuDialogVis: false,
        multipleSelection: [],
        menuData: [],
        props: {
          label: 'name',
        },
        expends: [],
        checks: [],
        roleId: 0,
        roleFlag: '',
        ids: []
      }
    },
    created() {
      this.load()
    },
    methods: {
      load() {
        request.get("/role/page", {
          params: {
            pageNum: this.pageNum,
            pageSize: this.pageSize,
            name: this.name,
          }
        }).then(res => {
          this.tableData = res.data.records
          this.total = res.data.total
        })
  
        request.get("/menu/ids").then(r => {
          this.ids = r.data
        })
  
      },
      save() {
        request.post("/role", this.form).then(res => {
          if (res.code === '200') {
            this.$message.success("保存成功")
            this.dialogFormVisible = false
            this.load()
          } else {
            this.$message.error("保存失败")
          }
        }).catch(error => {
                console.error('Registration request error:', error);
                this.$message.error('名称或唯一标识错误');
            });
      },
      saveRoleMenu() {
        request.post("/role/roleMenu/" + this.roleId, this.$refs.tree.getCheckedKeys()).then(res => {
          if (res.code === '200') {
            this.$message.success("绑定成功")
            this.menuDialogVis = false
  
            // 操作管理员角色后需要重新登录
            if (this.roleFlag === 'ROLE_ADMIN') {
              this.$store.commit("logout")
            }
  
          } else {
            this.$message.error(res.msg)
          }
        })
      },
      handleAdd() {
        this.dialogFormVisible = true
        this.form = {}
      },
      handleEdit(row) {
        this.form = JSON.parse(JSON.stringify(row))
        this.dialogFormVisible = true
      },
      del(id) {
        this.request.delete("/role/" + id).then(res => {
          if (res.code === '200') {
            this.$message.success("删除成功")
            this.load()
          } else {
            this.$message.error("删除失败")
          }
        })
      },
      handleSelectionChange(val) {
        console.log(val)
        this.multipleSelection = val
      },
      delBatch() {
        let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
        request.post("/role/del/batch", ids).then(res => {
          if (res.code === '200') {
            this.$message.success("批量删除成功")
            this.load()
          } else {
            this.$message.error("批量删除失败")
          }
        })
      },
      reset() {
        this.name = ""
        this.load()
      },
      handleSizeChange(pageSize) {
        console.log(pageSize)
        this.pageSize = pageSize
        this.load()
      },
      handleCurrentChange(pageNum) {
        console.log(pageNum)
        this.pageNum = pageNum
        this.load()
      },
      async selectMenu(role) {
        this.roleId = role.id
        this.roleFlag = role.flag
  
        // 请求菜单数据
        request.get("/menu").then(res => {
          this.menuData = res.data
  
          // 把后台返回的菜单数据处理成 id数组
          this.expends = this.menuData.map(v => v.id)
        })
  
        request.get("/role/roleMenu/" + this.roleId).then(res => {
          this.checks = res.data
          this.ids.forEach(id => {
            if (!this.checks.includes(id)) {
              // 可能会报错：Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'setChecked')
              this.$nextTick(() => {
                this.$refs.tree.setChecked(id, false)
              })
            }
          })
          this.menuDialogVis = true
        })
      },
    }
  }
  </script>
  
  
  <style>
  .headerBg {
    background: #eee!important;
  }
  </style>
  